Mammalian Heart Dissection Pre Lab Q copy PDF

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Heart dissection lab ...

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Mammalian Heart Dissection Pre-laboratory Questions 1. Complete the following table. Large Vessels Associated with the Heart

Vessel

Associated Chamber

Blood Flow (enters or exits heart)

Blood Oxygen Level (oxygenated or deoxygenated)

Pulmonary trunk and arteries

Right ventricle

Exits

Deoxygenated

Pulmonary vein

Left atrium

Enters

Oxygenated

Superior vena cava

Right atrium

Enters

Deoxygenated

Inferior vena cava

Right atrium

Enters

Deoxygenated

Aorta

Left ventricle

Exits

Oxygenated

2. Beginning with the superior vena cava, trace the path followed by a red blood cell as it passes into and through the heart, to the lungs, back to and through the heart, and to the rest of the body. Name each heart chamber, valve, and large blood vessel in the pathway. 1. Deoxygenated blood enters the superior vena cava, enters the right atrium. 2. Passes through the tricuspid valve into the right ventricle, then passes through the pulmonary valve and enters the pulmonary artery making its way to the lungs. 3. After leaving the lungs the blood travels through the pulmonary vein to the left atrium. 4. Blood leaves the Left atrium through the mitral valve into the left ventricle. 5. Blood passes through the aortic valve into the aorta to the rest of the body.

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Mammalian Heart Dissection 3. What are the primary tissue types present in endocardium, myocardium, and epicardium? Each of these tissues serves a specific purpose. Identify why each structure is composed of that particular tissue type. What purpose does each serve?. -The endocardium is comprised of a endothelium tissue. This provides the covering for the innermost portion of the heart. -myocardium is comprised of cardiac muscle. Cardiac muscle tissue is involuntary and is the major component in the function of the heart. This tissue allows for the heart to contract and work as a single unit. -epicardium is the loose connective tissue that makes up the outer layer of the heart. This layer also makes up the visceral pericardium.

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